EGR Deletes - Is it worth it?

Last Modified : Mar 30, 2021

The topic of deleting someone's EGR system has be brought up to me several times.  Especially with the 6.0L diesel crowd. I thought I would talk a little about what some of the advantages and disadvantages of deleting the EGR coolers on the 6.0L Powerstroke, the 6.4L Powerstroke, and the 6.7L Powerstroke.

The first thing you might say is... how can all the advantages and disadvantages of deleting the EGR apply to all these Powerstroke engines?  The math is easy.  The EGR system is easy.  The whole purpose of the EGR system on ANY vehicle, gas or diesel, is to reduce the emission of NoX.  That is Nitrites of Oxide.  NoX is really bad for the environment, but we won't go into why it is.  Just trust me, it is bad.

So what you have learned today is that EGR coolers reduce NoX, reduce combustion temperatures, and reduce engine efficiency ONLY when commanded by the PCM?  Sounds like you should leave the EGR system and the cooler intact to me.  The 6.0L were know for EGR cooler failures.  Ultimately, it was a poor design that ruptured due to oil cooler failure.  There was a term dubbed "bulletproofing" your 6.0L.  Its really a broadly mistaken term these days.  It is actually a brand name. The brand Bulletproof sells updated FICMs, EGR deletes, Perfromance EGR coolers, ect...

The EGR coolers were originally made with a finned design similar to a radiator or heater core.  Many companies now produce the updated EGR coolers with much better solid tube design, even Dorman makes a better EGR cooler, Dorman 904-262.

This is all just food for thought.